diff --git a/docs/reference/mapping/types/nested.asciidoc b/docs/reference/mapping/types/nested.asciidoc index 5d6ede6acd5ac..6272f4529c5f9 100644 --- a/docs/reference/mapping/types/nested.asciidoc +++ b/docs/reference/mapping/types/nested.asciidoc @@ -11,6 +11,8 @@ independently of each other. TIP: When ingesting key-value pairs with a large, arbitrary set of keys, you might consider modeling each key-value pair as its own nested document with `key` and `value` fields. Instead, consider using the <> data type, which maps an entire object as a single field and allows for simple searches over its contents. Nested documents and queries are typically expensive, so using the `flattened` data type for this use case is a better option. +WARNING: Nested fields have incomplete support in Kibana. While they are visible and searchable in Discover, they cannot be used to build visualizations in Lens. + [[nested-arrays-flattening-objects]] ==== How arrays of objects are flattened